﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Area
    {
        public double calculate(double r)
        {
            return 3.14 * r * r;
        }
        public int calculate(int a ,int b)
        {
            return a * b;
        }

      
    }
}
